1

Maybe mucocoele:
One of the most common things that causes bumps on the inside of the lower lip is called a mucocoele. These are from minor saliva glands that can become plugged. These will make bumps that look like cysts or small blisters under the lining skin. These will usually need to be removed with a minor procedure. See an ENT specialist of oral surgeon to get these treated.
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Mouth (mouth) " n. Pl. Mouths 1. A. The body opening through which an animal takes in food. B. The cavity lying at the upper end of the alimentary canal, bounded on the outside by the lips and inside by the oropharynx and containing in higher vertebrates the tongue, gums, and teeth. C. This cavity regarded as the source of sounds and speech. D. The opening to any cavity or canal in an organ ".
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2

Don't know:
Don't know without determination. Sometimes pathogens can lay dormant in your tissues and become active for no apparent reason. Any lesion still present after 2 weeks requires immediate examination. Call your Dentist. We can't diagnose this for you over the computer from a description that only says "bumps." Please call your Dentist.
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3

Minor salivary gland:
Minor salivary glands are present inside the lower lip and may appear as tiny bumps on the surface of the mucosal tissues when the lip is everted or pulled out and downward. Although small in size, they do help produce saliva.
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9

Mucocele possibly:
The bump on the inside of your lip is probably a mucocele. It is caused when the duct to a minor salivary gland gets clogged or traumatized and the saliva backs up forming a fluid filled bump. They are most common on the lower lip but can occur elsewhere in the mouth as well. Small ones can resolve on their own. Large ones (as shown here) require surgical removal by and oral surgeon.
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10

Possibly a Mucocele:
If your injury was just yesterday, the white bump may be called a mucocele. These are injuries to small salivary glands in the skin of the inside of the lip. These are usually harmless and usually go away without and treatment. Sometimes they persist and may need treatment by a dentist.
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13

Don't know:
There are too many possibilities that it could be. You need to see a doctor and have it looked at to have a real diagnosis. Both of your concerns (cold sore or canker sore) are possibilities along with lots of other things. Most are not serious but it would be a good idea to have it checked out.
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16

Lip biting:
You injured your tissue and has probably developed a mucocele. Keep away from irritating it and it may go down by itself. If it does not go away, a dentits can remove it for you.
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17

Lip bump...:
This could be an enlarged salivary gland or cyst, but it sounds most likely like a mucocele, or a mucous retention cyst. These can form when a tiny salivary gland duct in the lip is damaged or injured, obstructing the flow of mucous and causing a cyst. Unfortunately, it won't spontaneously resolve and may need to be surgically removed. You should see an oral surgeon. Good luck!
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18

Many causes:
Could be blocked salivary duct, viral problem similar to a wart, cancer, scar tissue, or many other problems. Probably benign, but see your dentist for definitive diagnoses. Dentist may want to refer you to oral surgeon for rx if indicated.
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20

You may have herpes:
Simplex one. If you go to the doctor they can give you a prescription for valtrex (valacyclovir). If indeed it is herpes this will help speed up the healing process. If it is not herpes, well maybe the doc you see will know what it is as they will have the advantage of seeing it.
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